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Finding the Fourth Proportional to 70,821.54, 97,734.58 and 38,992.58

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Solution

The fourth proportional to 70,821.54, 97,734.58 and 38,992.58 is: 53,810.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.54 : 97,734.58 = 38,992.58 : x
  2. Step 2: Convert to fraction form
    70,821.54/97,734.58 = 38,992.58/x
  3. Step 3: Cross multiply
    70,821.54x = 97,734.58 × 38,992.58
  4. Step 4: Simplify right side
    70,821.54x = 3,810,923,429.42
  5. Step 5: Solve for x
    x = 3,810,923,429.42/70,821.54
  6. Step 6: Final answer
    x = 53,810.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.